I configured bbswitch to not set any states automatically... So it's possible to obtain and verify the GPU power state.
However I removed the bbswitch module and booted with nouveau. Kernel 4.7.2: nouveau switches the discrete GPU off. I can't trigger the freeze, because bbswitch is missing. I'll work with the system and see if it will freeze. Kernel 4.8-rc4: nouveau does not care about the power state and the discrete GPU is never switched off. I will notice this, because the second cooling FAN will stop... Same log messages as send before. Am 30.08.2016 um 19:43 schrieb Ilia Mirkin: > On Tue, Aug 30, 2016 at 1:37 PM, Roland Singer > <roland.sin...@desertbit.com> wrote: >> My conclusion: >> >> 1. Nouveau has couple of problems with GTX 9** M Nvidia GPUs. >> I would love to help here. > > nouveau + bbswitch will always end in tears. You're going behind the > driver's back and messing around with state it believes it is > managing. What if you just use nouveau and let it auto-power-off the > GPU like it's designed to, with v4.8-rc? > > -ilia >